Next Generation On Board Computer The Next Generation On Board Computer is a fully redundant high reliable on board com-puter based on the radiation hardened CREOLE ASIC developed by RUAG Space. The CRE-OLE ASIC is a complete spacecraft on board computer on a chip including a fault tolerant SPARC® V8 processor, communication functions, reconfi guration function and embedded mass memory. The Next Generation On Board Computer is the latest in a family of on board computers that has successfully been powering various LEO, MEO, GEO and interplanetary space- craft for decades.

Key Features• Fully redundant unit with cross-coupling between vital functions• Processing, Telecommand, Telemetry, On-Board Time, Reconfiguration and File/Data Storage functions in one unit• Fixed or programmable reconfiguration sequences• Low mass and volume• Low power consumption• Unit external mission and spacecraft configuration• Qualified for space environment (LEO, MEO, GEO, inter-planetary)• Expansion slots for additional functions such as GNSS receiver and additional mass memory

RUAG Space on board computers are designed for space use and are fl ight proven with exten-sive heritage and excellent reliability.

Interfaces• 2 x 7 SpaceWire interfaces• 2 x 2 Control Area Network (CAN) buses• 2 x 2 Redundant MIL-STD-1553B buses• 2 x 2 Pulse Per Second (PPS) inputs• 2 x 16 Synchronisation Pulse outputs• 2 x 8 Alarm inputs• 2 x 3 Separation Strap inputs• 2 x 4 TM Transponder outputs (plus EGSE)• 2 x 2 TC Transceiver inputs (plus EGSE)• 2 x 30 Essential TM status inputs• 2 x 128 Pulse Command outputs• External USO input (optional)• Primary power supply: 28V, 50V or 100V

BudgetsUnit Size 208 x 242 x 278 mmMass 6.5 kgPower Consumption < 23 WReliability 0.99In-Orbit Life Time up to 20 yearsProcessing memory 512 Mibytes w EDACFile/Data storage 2 x 374 Gibit w EDAC

Options

• Non-redundant unit for small spacecraft applications• Resizing from zero to eight expansion slots• GNSS receiver• Payload mass memory• Additional Application Software Processor – several options

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RUAG Space | 405 15 Göteborg | SwedenTel. +46 31 735 00 00 | info.goteborg.space@ruag.com | www.ruag.com

Block Diagram

Software and Development Environment

Heritage

• Eclipse integrated software development environment• GNU cross compiler (GCC) suite • Boot Software and Hardware Driver Software• RTEMS operating system Board Support Package • LEON Tools utilizing the advanced on-chip Debug

Support Unit o LEONmon allowing source code level debugging using gdb and eclipse

o xLoader for loading non-volatile SW image storage o BackTracker for software execution history analysis o Trace for real-time software execution trace dump o Inspector for real-time non-intrusive inspection of target

o Shell for scripting of common tasks or tests o Broker management for LEON Tools and target management

• >2900 failure free equipment years in orbit• >300 Launcher On-Board Computers• >120 Satellite Data Handling Systems• EDRS-C, MTG, ExoMars Rover, Hispasat 36W-1,

SARah, Electra, Euclid, JUICE

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OM

M-N

OT-

1238

507-

RSE

• SPARC V8 LEON FT• 110 DMIPS @ 87.5 MHz• 32 Kbytes instruction cache• 16 Kbytes data cache• 512 Mibyte processing memory• 32 Kibyte Boot PROM• 8 Mibyte SW Image Storage• Gigabit Ethernet Debug Link• Real-Time Processor Trace Dump• Hardware Driver Software

Processing Function

OBC with 2 expansions slots